A low-profile CP microstrip antenna with broad beamwidth based on loading with curved microstrip resonant structures

被引:9
作者
Cao, W. -Q. [1 ,2 ]
Zhang, B. -N. [1 ]
Liu, A. J. [1 ]
Yu, T. -B. [1 ]
Guo, D. -S. [1 ]
Wei, Y. [1 ]
Qian, Z. -P. [1 ,2 ]
机构
[1] PLA Univ Sci & Technol, Inst Commun Engn, Nan Jing 210007, Jiangsu, Peoples R China
[2] Southeast Univ, State Key Lab Millimeter Waves, Nanjing, Jiangsu, Peoples R China
关键词
DEFECTED GROUND STRUCTURE; UWB ANTENNA; WIDE BANDWIDTH; BAND; REJECTION; DESIGN; ARRAY; WLAN;
D O I
10.1080/09205071.2012.706126
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A novel low-profile circularly polarized (CP) microstrip antenna with broad beamwidth is presented. A four-way power divider made by three Wilkinson power dividers is designed to feed this antenna. With eight curved microstrip resonant structures loaded around the circular radiating patch, the designed antenna has a height of only about 0.02 lambda and exhibits broad beamwidth for both E-plane and H-plane. The relation between the antenna radiation property and the resonant loading structures is analyzed and discussed. Measurement results show that the 3 dB beamwidth of the fabricated one is more than 150 degrees with good CP performance (axial ratio [AR] < 4 dB). Thus, this antenna can be used in occasions when CP antenna with broad beamwidth performance is desired.
引用
收藏
页码:1602 / 1610
页数:9
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